package com.itcodai.config.thread;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;

import java.util.concurrent.Executor;
import java.util.concurrent.ThreadPoolExecutor;

// 线程池的配置类
@Configuration
@EnableAsync
public class JmeterExecutorConfig {
    private static final Logger logger = LoggerFactory.getLogger(JmeterExecutorConfig.class);

    @Value("${jmeter.async.executor.thread.core_pool_size}")
    private int corePoolSize;
    @Value("${jmeter.async.executor.thread.max_pool_size}")
    private int maxPoolSize;
    @Value("${jmeter.async.executor.thread.queue_capacity}")
    private int queueCapacity;
    @Value("${jmeter.async.executor.thread.name.prefix}")
    private String namePrefix;

    @Bean(name = "jmeterServiceExecutor")
    public Executor asyncServiceExecutor() {
        logger.info("start jmeterServiceExecutor");

        //ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        ThreadPoolTaskExecutor executor = new JmeterThreadPoolTaskExecutor();

        //配置核心线程数
        executor.setCorePoolSize(corePoolSize);
        //配置最大线程数
        executor.setMaxPoolSize(maxPoolSize);
        //配置队列大小
        executor.setQueueCapacity(queueCapacity);
        //配置线程池中的线程的名称前缀
        executor.setThreadNamePrefix(namePrefix);
        // 拒绝策略
        // rejection-policy：当pool已经达到max_size的时候，如何处理新任务
        // CALLER_RUNS：不在新线程中执行任务，而是由调用者所在的线程来执行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());

        //执行初始化
        executor.initialize();
        return executor;
    }
}